IDENTIFICATION INFORMATION GENERATION DEVICE AND IDENTIFICATION INFORMATION GENERATION METHOD

摘要

Provided is an identification information generation device capable of generating identification information with its complete individual identifiability guaranteed. The identification information generation device comprises: an information separation means for separating a cryptographic key of k bits (k is an integer equal to or larger than 1) and second identification information of (r−m) bits (m is an integer equal to or larger than 1) from first identification information of r bits (r is an integer equal to or larger than 2) outputted from an identification information output means which is impossible to physically duplicated and outputs the same response to the same request for response; an information connection means for outputting fourth identification information by connecting the second identification information with third identification information of m bits capable of identifying x devices; and an encryption means for generating fifth identification information of r bits by performing predetermined processing on the fourth identification information by the use of the cryptographic key.

主权项

1. An identification information generation device comprising:
an information separation unit that separates a cryptographic key of k bits (k is an integer equal to or larger than 1) and second identification information of (r−m) bits (m is an integer equal to or larger than 1) from first identification information of r bits (r is an integer equal to or larger than 2) outputted from an identification information output unit that outputs the same response to the same request for response, the identification information output unit being impossible to physically duplicated; an information connection unit that outputs fourth identification information by connecting the second identification information with third identification information of m bits which is capable of identifying x devices; and an encryption unit that generates fifth identification information of r bits by performing predetermined processing on the fourth identification information by the use of the cryptographic key.